Home / 163,838,278.40-245,592,080.40-81,831,027.20

Finding the Fourth Proportional to 163,838,278.40, 245,592,080.40 and 81,831,027.20

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Solution

The fourth proportional to 163,838,278.40, 245,592,080.40 and 81,831,027.20 is: 122,663,961.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    163,838,278.40 : 245,592,080.40 = 81,831,027.20 : x
  2. Step 2: Convert to fraction form
    163,838,278.40/245,592,080.40 = 81,831,027.20/x
  3. Step 3: Cross multiply
    163,838,278.40x = 245,592,080.40 × 81,831,027.20
  4. Step 4: Simplify right side
    163,838,278.40x = 20,097,052,211,316,988
  5. Step 5: Solve for x
    x = 20,097,052,211,316,988/163,838,278.40
  6. Step 6: Final answer
    x = 122,663,961.12

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.