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Finding the Fourth Proportional to 91,709,509.05, 137,564,263.58 and 91,709,509.05

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Solution

The fourth proportional to 91,709,509.05, 137,564,263.58 and 91,709,509.05 is: 137,564,263.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,709,509.05 : 137,564,263.58 = 91,709,509.05 : x
  2. Step 2: Convert to fraction form
    91,709,509.05/137,564,263.58 = 91,709,509.05/x
  3. Step 3: Cross multiply
    91,709,509.05x = 137,564,263.58 × 91,709,509.05
  4. Step 4: Simplify right side
    91,709,509.05x = 12,615,951,075,288,046
  5. Step 5: Solve for x
    x = 12,615,951,075,288,046/91,709,509.05
  6. Step 6: Final answer
    x = 137,564,263.58

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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.