Home / 128,547,320.76-177,421,050.54-76,365,345.24

Finding the Fourth Proportional to 128,547,320.76, 177,421,050.54 and 76,365,345.24

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Solution

The fourth proportional to 128,547,320.76, 177,421,050.54 and 76,365,345.24 is: 105,399,472.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,547,320.76 : 177,421,050.54 = 76,365,345.24 : x
  2. Step 2: Convert to fraction form
    128,547,320.76/177,421,050.54 = 76,365,345.24/x
  3. Step 3: Cross multiply
    128,547,320.76x = 177,421,050.54 × 76,365,345.24
  4. Step 4: Simplify right side
    128,547,320.76x = 13,548,819,777,330,586
  5. Step 5: Solve for x
    x = 13,548,819,777,330,586/128,547,320.76
  6. Step 6: Final answer
    x = 105,399,472.33

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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.