Home / 105,634,860.21-145,722,065.45-70,413,312.69

Finding the Fourth Proportional to 105,634,860.21, 145,722,065.45 and 70,413,312.69

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Solution

The fourth proportional to 105,634,860.21, 145,722,065.45 and 70,413,312.69 is: 97,134,348.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    105,634,860.21 : 145,722,065.45 = 70,413,312.69 : x
  2. Step 2: Convert to fraction form
    105,634,860.21/145,722,065.45 = 70,413,312.69/x
  3. Step 3: Cross multiply
    105,634,860.21x = 145,722,065.45 × 70,413,312.69
  4. Step 4: Simplify right side
    105,634,860.21x = 10,260,773,360,011,428
  5. Step 5: Solve for x
    x = 10,260,773,360,011,428/105,634,860.21
  6. Step 6: Final answer
    x = 97,134,348.83

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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.