Home / 153,959.04-212,484.60-90,317.34

Finding the Fourth Proportional to 153,959.04, 212,484.60 and 90,317.34

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Solution

The fourth proportional to 153,959.04, 212,484.60 and 90,317.34 is: 124,650.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    153,959.04 : 212,484.60 = 90,317.34 : x
  2. Step 2: Convert to fraction form
    153,959.04/212,484.60 = 90,317.34/x
  3. Step 3: Cross multiply
    153,959.04x = 212,484.60 × 90,317.34
  4. Step 4: Simplify right side
    153,959.04x = 19,191,043,862.96
  5. Step 5: Solve for x
    x = 19,191,043,862.96/153,959.04
  6. Step 6: Final answer
    x = 124,650.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.