Home / 100,621,875.96-138,857,354.16-56,569,071.18

Finding the Fourth Proportional to 100,621,875.96, 138,857,354.16 and 56,569,071.18

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Solution

The fourth proportional to 100,621,875.96, 138,857,354.16 and 56,569,071.18 is: 78,064,848.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    100,621,875.96 : 138,857,354.16 = 56,569,071.18 : x
  2. Step 2: Convert to fraction form
    100,621,875.96/138,857,354.16 = 56,569,071.18/x
  3. Step 3: Cross multiply
    100,621,875.96x = 138,857,354.16 × 56,569,071.18
  4. Step 4: Simplify right side
    100,621,875.96x = 7,855,031,551,343,509
  5. Step 5: Solve for x
    x = 7,855,031,551,343,509/100,621,875.96
  6. Step 6: Final answer
    x = 78,064,848.98

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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.