Home / 129,029,705.12-178,060,681.32-70,292,852.90

Finding the Fourth Proportional to 129,029,705.12, 178,060,681.32 and 70,292,852.90

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Solution

The fourth proportional to 129,029,705.12, 178,060,681.32 and 70,292,852.90 is: 97,003,967.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    129,029,705.12 : 178,060,681.32 = 70,292,852.90 : x
  2. Step 2: Convert to fraction form
    129,029,705.12/178,060,681.32 = 70,292,852.90/x
  3. Step 3: Cross multiply
    129,029,705.12x = 178,060,681.32 × 70,292,852.90
  4. Step 4: Simplify right side
    129,029,705.12x = 12,516,393,278,814,006
  5. Step 5: Solve for x
    x = 12,516,393,278,814,006/129,029,705.12
  6. Step 6: Final answer
    x = 97,003,967.16

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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.